The AD7549 is a monolithic, dual, 12-BitCurrent output DAC。 It is available in 0.3" wide, 20-pin DIP and 20-pin surface-mount packages. Both DACs provide four-quadrant multiply, and each DAC has a separate reference input and feedback resistor. The monolithic architecture ensures excellent thermal tracking and gain error tracking between the two DACs.
Each DAC in the AD7549 loads data in three 4-bit nibble formats. The control logic is designed for easy processor interfacing. Input and DAC register loading is done using address lines A0, A1, A2 and the /CS and /WR lines. A logic high on the CLR input clears all registers. The active-low UPD input allows both DACs to be updated simultaneously.